Cock Slave Pt 36

I heard him start breathing harder as he fucked my ass harder. I flexed my ass muscles repeatedly. I felt his cock throb as he yelled out and shot up my ass. I was in heaven. “Perfect tight ass and great flexing, Cock Slave!”
Part 35
*****
After work one evening, walking to the bus station, I got a message on Scruff, “You will suck my fat nine uncut cock and swallow my five-day load. You will take my cock up your ass and swallow my condom semen and then throat my cock and swallow more of my semen.” He included was a picture of a hard, arrow-straight uncut cock.
My mouth watered, my cock stiffened and started to dribble a bit. He sent the address, telling me the security guard in the lobby would give me instructions.
When I entered the lobby, which looked more like an office building lobby, the guard asked, “Are you the Cock Slave?”
I answered, “Yes, I am.”
He smiled, looked me over, nodded his head and made a phone call. After the call, he instructed me to go to apartment 18C, that the door would be open, my Cock Master would be in the bathroom and I was to go to the back, get naked and lay on my back on the bed with my eyes closed, my arms out at my sides, and my mouth wide open.
He warned, “If your eyes are open, your Cock Master won’t come out and no cock and semen for you!” On the way up in the elevator, it occurred to me that the security guard had done that before.
I went up to the apartment and walked in. It looked more like a really nice hotel room as there didn’t seem to be a kitchen or a living room, but there was a laptop...